A Fast Double Precision CFD Code Using CUDA

We describe a second order double precision nite volume Boussinesq code
designed to run on the CUDA architecture. We perform detailed validation of
the code on a variety of Rayleigh-Benard convection problems and show second
order convergence. We obtain matching results with a Fortran code running on
an eight-core CPU. The CUDA-accelerated code performs approximately eight
times faster than the Fortran code on identical problems. As a result, we are
able to run a simulation with a grid of size 384 x 384 x 192 at 1.6 seconds per time
step on a machine with a single GPU.

Jonathan Cohen (NVIDIA)
M. Jeroen Molemaker (UCLA)
Publication Date: 
Friday, May 1, 2009
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